can: add missing socket check in can/raw release
commit19ad77be55e04722f4879bf41773b5b1d0d07510
authorOliver Hartkopp <socketcan@hartkopp.net>
Wed, 20 Apr 2011 01:57:15 +0000 (20 01:57 +0000)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 9 May 2011 23:04:47 +0000 (9 16:04 -0700)
tree19856a0d7f7274e1c547a46fc8fd29a7d469cba3
parenta482cd7db9a4067c9bcfcaf832e9bffcf27e3def
can: add missing socket check in can/raw release

commit 10022a6c66e199d8f61d9044543f38785713cbbd upstream.

v2: added space after 'if' according code style.

We can get here with a NULL socket argument passed from userspace,
so we need to handle it accordingly.

Thanks to Dave Jones pointing at this issue in net/can/bcm.c

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
net/can/raw.c